This is a really nice name. One of my friends has this name (she is Russian) but we call her Toni. I think it goes well with long Italian middle names (eg. Francesca, Gabriella, Isabella).
Another great name which I have never heard of! I actually thought I made this name up because I would like to name my next child after my late father, Anthony, whether it's a boy or a girl. I also love the name Nina so I put the names together and "made up" Antonina. I looked it up on a whim and was so excited that it's a real name because I don't really like made up names.
Antonina Żabińska is one of the main characters in the book "The Zookeeper's Wife: A War Story" by Diane Ackerman. She and her husband, Jan (pronounced Yahn) Żabiński owned a zoo in Warsaw, Poland. After it was bombed during World War II, they were able to save over 300 people from the Nazis by hiding the refugees in the empty animal cages. You can look it up and read the book - as amazing as it is, this is a true story!